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11 May 2017 Ultrasonic waves in biaxially stressed multi-layered and 1D phononic structures (Conference Presentation)
Andriejus Demcenko, Arno W. F. Volker, Jonathan M. Cooper
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Proceedings Volume 10169, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017; 101691M (2017) https://doi.org/10.1117/12.2261685
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2017, Portland, Oregon, United States
Abstract
Elastic wave velocities as a function of applied stress are analysed in multilayered and 1-D phononic structures. The analysis is conducted by the means of the acoustoelasticity theory for isotropic elastic structures with application of this theory to stable formulation of stiffness and hybrid matrix methods for the eigenvalue analysis in the stressed elastic structures. The reformulated matrix methods are used for obtaining modal solutions, reflection and transmission coefficients for different multilayered media cases. Floquet wave analysis is presented for the stressed 1-D phononic structures. The analysis is supported by numerical examples.
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Andriejus Demcenko, Arno W. F. Volker, and Jonathan M. Cooper "Ultrasonic waves in biaxially stressed multi-layered and 1D phononic structures (Conference Presentation)", Proc. SPIE 10169, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017, 101691M (11 May 2017); https://doi.org/10.1117/12.2261685
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KEYWORDS
Multilayers
Ultrasonics
Aerospace engineering
Current controlled current source
Nondestructive evaluation
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